Revert "Squashed revert of 410:"

This reverts commit f49a2e6742.

_pages/en_US/404.txt

@@ -1,7 +1,10 @@
 ---
-title: "Page Not Found" #
+title: "Page not found" #
 sitemap: false
 ---
 
 Sorry, but the page you were trying to view does not exist.
 {: .notice--info}
+
+![](https://http.cat/404)
+{: .notice--info}

_pages/en_US/410.txt

@@ -0,0 +1,25 @@
+---
+title: "Page no longer exists" #
+sitemap: false
+redirect_from:
+  - installing-boot9strap-(usm)
+  - installing-boot9strap-(hbl-usm)
+  - installing-boot9strap-(fredtool)
+  - installing-boot9strap-(fredtool-legacy)
+  - installing-boot9strap-(frogtool)
+  - homebrew-launcher-(pichaxx)
+  - homebrew-launcher-(steelhax)
+  - homebrew-launcher-(smilehax-IIe)
+  - homebrew-launcher-(ninjhax2-dx)
+  - homebrew-launcher-(freakyhax)
+  - homebrew-launcher-(super-skaterhax)
+  - dumping-movable-(nimhax)
+---
+
+The page you are trying to view used to exist, but it has since been removed because it has been superseded by better exploits. Maybe the instructions you are following are outdated? (If you got here from a link on this guide, [let us know](https://github.com/hacks-guide/Guide_3DS/issues))
+
+Go back to [Get Started](get-started)
+{: .notice--info}
+
+![](https://http.cat/410)
+{: .notice--info}